| Starter | Tm | Tier | Game |
|---|---|---|---|
| Warren Spahn | ATL | 4.87 | 195108190_LAN_ATL |
| Robin Roberts | PHI | 3.35 | 195108180_SFN_PHI |
| Bob Feller | CLE | 3.22 | 195108171_CLE_CHA |
| Preacher Roe | LAN | 3.16 | 195108180_LAN_ATL |
| Connie Marrero | MIN | 1.57 | 195108170_BOS_MIN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Alex Kellner | OAK | -2.46 | 195108180_OAK_NYA |
| Bill Wight | BOS | -1.82 | 195108170_BOS_MIN |
| Fred Sanford | BAL | -1.57 | 195108180_DET_BAL |
| Johnny Schmitz | LAN | -1.52 | 195108172_LAN_ATL |
| Gene Bearden | DET | -0.97 | 195108191_DET_BAL |
Based on accumulated WAA for this season up to 1951-08-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +003+ | 6.77 | Mike Garcia | 191 | CLE |
| +008+ | 5.66 | Sal Maglie | 218.3 | SFN |
| +009+ | 5.54 | Warren Spahn | 222.3 | ATL |
| +010+ | 5.44 | Robin Roberts | 225 | PHI |
| +012+ | 5.21 | Eddie Lopat | 178.7 | NYA |
| +016+ | 4.82 | Preacher Roe | 188.7 | LAN |
| +019+ | 4.12 | Larry Jansen | 204.7 | SFN |
| +020+ | 4.11 | Early Wynn | 209 | CLE |
| +021+ | 4 | Ralph Branca | 145 | LAN |
| +022+ | 3.98 | Mickey McDermott | 152.7 | BOS |
| +023+ | 3.96 | Don Newcombe | 190.7 | LAN |
| +024+ | 3.95 | Vern Bickford | 159.7 | ATL |
| +026+ | 3.93 | Bob Feller | 200.7 | CLE |
| +031+ | 3.71 | Saul Rogovin | 169 | TOT |
| +032+ | 3.68 | Bubba Church | 191.7 | PHI |
| +040+ | 3.06 | Connie Marrero | 161 | MIN |
| +042+ | 3 | Allie Reynolds | 162.7 | NYA |
| +044+ | 3 | Vic Raschi | 201 | NYA |
| +048+ | 2.82 | Billy Pierce | 180.3 | CHA |
| +050+ | 2.65 | Russ Meyer | 168 | PHI |
| +052+ | 2.48 | Harry Brecheen | 114.3 | SLN |
| +053+ | 2.48 | Max Surkont | 179.3 | ATL |
| +054+ | 2.43 | Chet Nichols | 93.3 | ATL |
| +057+ | 2.3 | Harry Perkowski | 84.3 | CIN |
| +059+ | 2.26 | Ewell Blackwell | 168.3 | CIN |
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